<template>
    <div class="login_container">
        <el-row>
            <el-col :span="12" :xs="0"></el-col>
            <el-col :span="12" :xs="24">
                <el-form class="login_form" :model="loginForm" :rules="rules" ref="loginforms">
                    <h1>Hello</h1>
                    <h2>欢迎来到硅谷甄选</h2>
                    <el-form-item prop="username">
                        <el-input :prefix-icon="User" v-model="loginForm.username"></el-input>
                    </el-form-item >
                    <el-form-item prop="password">
                        <el-input type="password" :prefix-icon="Lock" v-model="loginForm.password" show-password></el-input>
                    </el-form-item>
                    <el-form-item>
                        <el-button :loading="loading" class="login_btn" type="primary" size="default" @click="login">登录</el-button>
                    </el-form-item>
                </el-form>
            </el-col>
        </el-row>
    </div>
</template>

<script setup lang="ts">
import {User,Lock } from '@element-plus/icons-vue';
import { reactive,ref } from 'vue';
import useUserStore from '@/store/modules/user';
import { useRouter,useRoute } from 'vue-router';
import { ElNotification } from 'element-plus';
//引入获取当前时间的函数
import { getTime } from '@/utils/time';
let loginforms=ref();
let useStore=useUserStore();
let $route=useRoute();
//获取路由器
let $router=useRouter();
//定义变量控制按钮加载效果
let loading=ref(false);
//收集账号和密码
let loginForm =reactive({username:'admin',password:'111111'});
//登录按钮的回调
const login=async()=>{
    await  loginforms.value.validate();
    // console.log( loginforms.value.validate());
    
    //加载效果：开始加载
    loading.value=true
    //点击登录按钮以后干什么？
    //通知仓库发登录请求
    //请求成功->首页展示数据的地方
    //请求失败->弹出登录失败信息

    try{
        await useStore.userLogin(loginForm);
        //编程式导航跳转到展示数据页面
        let redirect:any=$route.query.redirect;
        $router.push({path:redirect||'/'});
        //登录成功的提示信息
        ElNotification({
            type:'success',
            message:'欢迎回来',
            title:`HI,${getTime()}好`
        });
         //登录成功加载效果消失
         loading.value=false;
    }catch(error){
        //登录失败加载效果消失
        loading.value=false;
        console.log(error);
        
        //登录失败的提示信息
        ElNotification({
            type:'error',
            message:(error as Error).message
        })  
    }
  
}
const validatorUserName=(rule:any,value:any,callback:any)=>{
    if(value.length>=5){
        callback();
    }else{
        callback(new Error('账号长度至少五位'))
    }
    
}
const validatorPassword=(rule:any,value:any,callback:any)=>{
    if(value.length>=6){
        callback();
    }else{
        callback(new Error('密码长度至少六位'))
    }
    

}
//定义表单校验需要配置对象
const rules={
    //规则对象属性
    //required，代表这个字段务必要校验的
    //min：文本长度至少多少为
    //max：文本字段最多多少位
    //message：错误的提示信息
    //trigger：触发校验表单的时机 change ：文本发生变化 blur：失去焦点
    username:[
        // {required:true,min:3,max:10,message:'账号长度至少三位',trigger:'change'}
        {validator:validatorUserName,trigger:'change'}
    ],
    password:[
        // {required:true,min:6,max:15,message:'密码长度至少六位',trigger:'change'}
        {validator:validatorPassword,trigger:'change'}
    ]
}


</script>

<style scoped lang="scss">
.login_container {
    width: 100%;
    height: 100vh;
    background: url('@/assets/images/background.jpg') no-repeat;
    background-size: cover;
 
    .login_form{
        position: relative;
        top: 30vh;
        width: 70%;
        background: url("@/assets/images/login_form.png") no-repeat;
        background-size: cover;
        padding: 40px;
        h1{
            font-size: 40px;
            color: white;
        }
        h2{
            font-size: 20px;
            color: white;
            margin: 20px 0;
        }
        .login_btn{
            width: 100%;
        }
        
    }
}
</style>